Finding the Third Proportional to 990,174 and 2,165,820

Step by Step Solution

1. Step 1: Write the proportion equation
   990,174 : 2,165,820 = 2,165,820 : x
2. Step 2: Convert to fraction form
   990,174/2,165,820 = 2,165,820/x
3. Step 3: Cross multiply
   990,174x = 2,165,820 × 2,165,820
4. Step 4: Simplify right side
   990,174x = 4,690,776,272,400
5. Step 5: Solve for x
   x = 4,690,776,272,400/990,174
6. Step 6: Final answer
   x = 4,737,325.23